Firefighters were called to the 900 block of West Cascade Ct. shortly after 7:00 p.m.
Kittitas Valley Fire and Rescue Capt. Joe Delvo says flames were shooting out the front and roof when firefighters arrived.
The Daily Record reports firefighters had reports of someone trapped inside and found the body.
Fire officials said the victim was a man at least 60-years-old.
A second person who lives there wasn't home at the time of the fire. The Red Cross is helping that person.
The home was a total loss. The cause of the fire was expected to be determined in the next two days.